Results 71 to 80 of about 288 (182)

Theatres of Indirectness: Passive Aggression and Failure

Critical Quarterly, EarlyView.
Sara Crangle, Sam Ladkin
wiley   +1 more source

The Outsiders: Principled Withdrawal, Whiteness, and Power in the Los Angeles Food Justice Movement

American Anthropologist, Volume 128, Issue 3, Page 445-455, September 2026.
ABSTRACT This article draws on understandings of whiteness and the misconstrual of South Central Los Angeles to analyze the power dynamics between “outsider” activists and residents of South Central as they worked toward a more equitable food system.
Hanna Garth
wiley   +1 more source

Variations of Mid‐Magnetotail Magnetic Pressure During Substorms

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Magnetic reconnection is commonly observed in the mid‐tail plasma sheet during substorms, the mechanism behind this spatial preference, however, remains unsolved. This study focuses on magnetic pressure evolution within this critical region during substorms.
Xiaowei Ma, Hui Zhang, Huanzhi Yuan, Runze Li   +3 more
wiley   +1 more source

Electron Acceleration by Multiple Fast Fermi Reflections at Earth’s Bow Shock

The Astrophysical Journal
The generation of energetic particles in the Universe is an important topic in astrophysical and space physics. Although the diffusive shock acceleration has been acknowledged to play an essential role in particle acceleration, the injection problem has ...
Y. Y. Liu, J. B. Cao, C. M. Liu, Y. T. Song, D. K. Hu   +4 more
doaj   +1 more source

Spiky Bursts of Energetic Electron Beams Upstream of Nonstationary Quasi‐Perpendicular Shocks

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Energetic electron beams play a crucial role in collisionless shocks by driving upstream plasma waves and providing seed populations for diffusive shock acceleration. However, the processes responsible for their generation at quasi‐perpendicular shocks remain poorly understood.
Ao Guo, Quanming Lu, San Lu, Shutao Yao, Xinliang Gao   +4 more
wiley   +1 more source

Structured Energy Conversion in Kelvin‐Helmholtz Instability

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract We present quantitative investigations of the energy conversion pathways—electromagnetic ϵEM $\left({{\epsilon}}^{EM}\right)$, fluid flow ϵf $\left({{\epsilon}}^{f}\right)$, and particle thermal ϵth $\left({{\epsilon}}^{th}\right)$ energies—within the Kelvin‐Helmholtz instability (KHI) observed by the Magnetospheric Multiscale mission. We find
Kyunghwan Dokgo, Kyoung‐Joo Hwang, Eunjin Choi, James L. Burch, Rungployphan Kieokaew   +4 more
wiley   +1 more source

Multimission Observations of Relativistic Electrons and High-speed Jets Linked to Shock-generated Transients

The Astrophysical Journal Letters
Shock-generated transients, such as hot flow anomalies (HFAs), upstream of planetary bow shocks, play a critical role in electron acceleration. Using multimission data from NASA’s Magnetospheric Multiscale and ESA’s Cluster missions, we demonstrate the ...
Savvas Raptis, Martin Lindberg, Terry Z. Liu, Drew L. Turner, Ahmad Lalti, Yufei Zhou, Primož Kajdič, Athanasios Kouloumvakos, David G. Sibeck, Laura Vuorinen, Adam Michael, Mykhaylo Shumko, Adnane Osmane, Eva Krämer, Lucile Turc, Tomas Karlsson, Christos Katsavrias, Lynn B. Wilson III, Hadi Madanian, Xóchitl Blanco-Cano, Ian J. Cohen, C. Philippe Escoubet   +21 more
doaj   +1 more source

Mars' O+ ${\mathbf{O}}^{+}$ and O2+ ${\mathbf{O}}_{\mathbf{2}}^{+}$ Ion Escape During Disappearing Solar Wind Events

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Disappearing solar wind events (DSWEs), intervals when the solar wind proton density <1 cm−3 ${\text{cm}}^{-3}$, represent one extreme of the Mars solar wind interaction. Using data from NASA's Mars Atmosphere and Volatile Evolution (MAVEN) mission from February 2016 to May 2024, 154 orbits across 90 unique days were identified.
N. R. Schnepf, Y. Dong, H.‐W. Shen, J. S. Halekas, W. K. Peterson, K. G. Hanley, S. Shaver, A. Azari, N. Jones, D. Brain, E. M. B. Thiemann, J. R. Espley, J. P. McFadden   +12 more
wiley   +1 more source

Compressive Structures in the Foreshock of Collisionless Shocks

The Astrophysical Journal Letters
Collisionless shocks are fundamental accelerators of energetic particles, yet the observations of nonlinear foreshock structures, which are essential in acceleration processes, differ significantly between interplanetary (IP) shocks and planetary bow ...
Savvas Raptis, Domenico Trotta, Drew L. Turner, Xóchitl Blanco-Cano, Heli Hietala, Tomas Karlsson, Immanuel Christopher Jebaraj, Ivan Y. Vasko, Adnane Osmane, Kazue Takahashi, David Lario, Lynn B. Wilson III, Gregory G. Howes, Robert F. Wimmer-Schweingruber   +13 more
doaj   +1 more source

Bow Shock Current Closure Through the Magnetosheath for Non‐Zero IMF By—Results From Hybrid Simulations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The bow shock current (BSC) flows on the bow shock due to the compression of the interplanetary magnetic field (IMF) across the shock. Although previous studies have shown that the BSC can connect to magnetospheric current systems via the magnetosheath, it is still not known how this happens.
G. Semrén, M. Hamrin, S. Fatemi, E. Krämer, L. Macke, T. Karlsson, T. Pitkänen, P. Dredger, R. E. Lopez, O. Goncharov, S. E. Milan   +10 more
wiley   +1 more source